英语翻译Do you know something about tree rings?Do you know they
英语翻译
Do you know something about tree rings?Do you know they can tell us what the weather was like,sometimes even hundreds of years ago?
A tree will grow well in a climate with lots of sunsgine and rain fall.And little sunshine or rainfall will limit the growth of a tree.We can see the change of climate by studying the tree rings.For example,to find out the weather of ten years ago,we can count rings of a tree from the outside to the inside.If the tenth ring is far from the eleventh ring,then we’re sure that it was sunny and raniny most of that year,If it is near to the eleventh ring,then we’re sure that it was sunny and rainy most of that year.If it is near to the eleventh ring,then the climate that year was bad.
A scientist studied the rings of dead trees there,he found that the people had to leave bacause they had cut down all the trees to make fires and building.As all the trees had gone,the people there had to move.